import { PostLyric } from 'api/lyric'
import { PostMusic } from 'api/music'
import {Base64} from 'js-base64'

export default class Song {
  constructor({id, mid, singer, name, album, duration, image, url}) {
    this.id = id
    this.mid = mid
    this.singer = singer
    this.name = name
    this.album = album
    this.duration = duration
    this.image = image
  }

  PostLyric() {
    if (this.lyric) {
      return Promise.resolve(this.lyric)
    }
    return new Promise((resolve, reject) => {
      PostLyric(this.mid).then((res) => {
        if (res.retcode === 0) {
          this.lyric = Base64.decode(res.lyric)
          resolve(this.lyric)
        } else {
          reject('no lyric')
        }
      })
    })
  }

  PostMusic() {
    if (this.url) {
      return Promise.resolve(this.url)
    }
    return new Promise((resolve, reject) => {
      PostMusic(this.mid).then((res) => {
        if (res.code === 0) {
          let key = res.data.items[0].vkey
          this.url = `http://dl.stream.qqmusic.qq.com/C400${this.mid}.m4a?vkey=${key}&guid=4389467480&uin=0&fromtag=66`
          resolve(this.url)
        }else{
          reject('no music')
        }
      })
    })
  }

}




export function createSong(musicData) {
  return new Song({
    id: musicData.songid,
    mid: musicData.songmid,
    singer: filterSinger(musicData.singer),
    name: musicData.songname,
    album: musicData.albumname,
    duration: musicData.interval,
    image: `https://y.gtimg.cn/music/photo_new/T002R300x300M000${musicData.albummid}.jpg?max_age=2592000`
  })
}

export function filterSinger(singer) {
  let ret = []
  if (!singer) {
    return ''
  }
  singer.forEach((s) => {
    ret.push(s.name)
  })
  return ret.join('/')
}

